CN103096408A - Handover method in mobile communication - Google Patents
Handover method in mobile communication Download PDFInfo
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- CN103096408A CN103096408A CN2011103466368A CN201110346636A CN103096408A CN 103096408 A CN103096408 A CN 103096408A CN 2011103466368 A CN2011103466368 A CN 2011103466368A CN 201110346636 A CN201110346636 A CN 201110346636A CN 103096408 A CN103096408 A CN 103096408A
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Abstract
The invention provides a handover method in mobile communication. According to the handover method, a switching point for handover of a mobile station is provided, the current position of the mobile station is compared with the switching point, or obtained time of the mobile station to the switching point is compared with a preset value, and therefore whether handover needs to be carried out can be judged. The handover is generated based on the switching point, and therefore ping-pong effect can be avoided, and communication quality can be improved. Besides, the comparison is simple in operation, just simple margin calculation needs to be carried out, compared with data measuring and processing between the mobile station and the base station, calculating speed is quick, and therefore delay, lag and the like of the handover can be avoided, speed and quality of the handover can be improved, and the communication quality is improved.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly the method for handover in a kind of mobile communication.
Background technology
In mobile communication, from a residential quarter (coverage that refers to base station or base station) when moving to another residential quarter, in order to keep mobile subscriber's not interrupt communication, the channel that need to carry out switches and is called handover when travelling carriage.In cellular mobile communications networks, handover is to guarantee that the mobile subscriber realizes uninterrupted communication under mobile status; Handover is also that the overlapping region that it occurs in a plurality of residential quarters (hereinafter all take two residential quarters as example) signal coverage areas is commonly referred to the switch area for acceptable communication quality of maintenance between travelling carriage and base station.
Due to, handover is except the not interrupt communication that keeps the mobile subscriber, also keep a relatively high communication quality between travelling carriage and network, and the signal of the base station that travelling carriage receives is stronger, communication quality is just higher, therefore, the generation of handover usually with the signal strength signal intensity of base station as judgment standard.In mobile communication system, if two base station signal strength acute variation in the switch area, namely for travelling carriage, this base station signal is stronger a little while, an other base station signal is stronger a little while, will make travelling carriage carry out back and forth handover in two base stations, produce so-called " ping-pong ".Handover keeps a relatively high communication quality between travelling carriage and network, refer on ordinary meaning: after handover is completed with respect to before handover, also can obtain a higher communication quality between travelling carriage and network, but, handover carry out process, communication quality will be subject to certain impact and reduce.Therefore, when producing " ping-pong ", owing to again and again carrying out handover, the communication quality non-constant that will become, the possibility of communication disruption is also more increased, and the reliability of communication has been lowered.
In addition, handover based on base station signal strength, need to carry out DATA REASONING and processing between travelling carriage and base station, whether carry out the judgement of handover thereby make, described base station comprises the current base station of serving and the adjacent base station that service may be provided, and the measurement of data will need the regular hour with processing, consider the situation that mobile station speed is very fast, for example on high ferro, the measurement of these data and the used time of processing will be very obvious, thereby will cause the situation such as time-delay, hysteresis of handover, cause communication disruption.
Summary of the invention
The object of the present invention is to provide the method for handover in a kind of mobile communication, be easy to produce " ping-pong ", the problem that communication quality is poor in order to solve existing method of handover.
For solving the problems of the technologies described above, the invention provides the method for handover in a kind of mobile communication, described method of handover provides the switching point positional information of movement locus and the handover of travelling carriage, and carries out: step 1: the current location information that obtains described travelling carriage; Step 2: according to described current location information, judge whether described travelling carriage arrives described switching point; Step 3: when described travelling carriage arrives described switching point, carry out handover; When described travelling carriage does not arrive described switching point, repeat described step 1 and described step 2.
Optionally, in the method for handover in described mobile communication, described current location information comprises: longitude and the latitude at described travelling carriage place.
Optionally, in the method for handover in described mobile communication, described current location information comprises: the stroke that described travelling carriage is done.
Optionally, in the method for handover in described mobile communication, described switching point positional information comprises: longitude and the latitude at described switching point place.
Optionally, in the method for handover in described mobile communication, described switching point positional information comprises: described switching point is to the distance of the starting point of described movement locus.
Optionally, in the method for handover in described mobile communication, before carrying out described step 1, carry out the preorder step: judge whether described travelling carriage enters described switch area, if carry out described step 1; If not, repeat described preorder step.
Optionally, in the method for handover in described mobile communication, described switching point is positioned at described switch area.
Optionally, in the method for handover in described mobile communication, only has a switching point in described switch area.
Optionally, in the method for handover in described mobile communication, by receiving the signal of base station emission, judge whether described travelling carriage enters described switch area.
Optionally, in method of handover in described mobile communication, after described travelling carriage enters described switch area, the current location information of the described travelling carriage of real time record and the distance of described mobile to base station, until described travelling carriage shifts out described switch area, according to described distance, proofread and correct described switching point.
Optionally, in method of handover in described mobile communication, after described travelling carriage enters described switch area, the signal strength signal intensity of the base station that the current location information of the described travelling carriage of real time record and described travelling carriage receive, until described travelling carriage shifts out described switch area, according to described signal strength signal intensity, proofread and correct described switching point.
The present invention also provides the method for handover in another kind of mobile communication, and described method of handover provides the switching point positional information of movement locus and the handover of travelling carriage, and carries out: step 1: the current location and the velocity information that obtain travelling carriage; Step 2: according to described current location and velocity information, draw described travelling carriage to the time of described switching point; Step 3: when the described time is less than or equal to a preset value, carry out handover; When the described time during greater than described preset value, repeated execution of steps one and step 2.
Optionally, in the method for handover in described mobile communication, described current location information comprises: longitude and the latitude at described travelling carriage place.
Optionally, in the method for handover in described mobile communication, described current location information comprises: the stroke that described travelling carriage is done.
Optionally, in the method for handover in described mobile communication, described switching point positional information comprises: longitude and the latitude at described switching point place.
Optionally, in the method for handover in described mobile communication, described switching point positional information comprises: described switching point is to the distance of the starting point of described movement locus.
Optionally, in the method for handover in described mobile communication, before carrying out described step 1, carry out the preorder step: judge whether described travelling carriage enters described switch area, if carry out described step 1; If not, repeat described preorder step.
Optionally, in the method for handover in described mobile communication, described switching point is positioned at described switch area.
Optionally, in the method for handover in described mobile communication, only has a switching point in described switch area.
Optionally, in the method for handover in described mobile communication, by receiving the signal of base station emission, judge whether described travelling carriage enters described switch area.
Optionally, in method of handover in described mobile communication, after described travelling carriage enters described switch area, the current location information of the described travelling carriage of real time record and the distance of described mobile to base station, until described travelling carriage shifts out described switch area, according to described distance, proofread and correct described switching point.
Optionally, in method of handover in described mobile communication, after described travelling carriage enters described switch area, the signal strength signal intensity of the base station that the current location information of the described travelling carriage of real time record and described travelling carriage receive, until described travelling carriage shifts out described switch area, according to described signal strength signal intensity, proofread and correct switching point.
Compared with prior art, in method of handover in mobile communication provided by the invention, provide travelling carriage to carry out the switching point of handover, compare by current location and switching point with travelling carriage, perhaps the travelling carriage that draws time and the preset value to switching point compared, thereby whether judgement carries out handover, its handover is based on switching point and produces, can avoid the generation of " ping-pong " thus, improve communication quality;
In addition, above-mentioned is relatively a very shirtsleeve operation, as long as it carries out a simple difference computing, than DATA REASONING and the processing carried out between travelling carriage and base station, its arithmetic speed will be very many soon, thereby avoided the situation such as time-delay, hysteresis of handover, improved speed and the quality of handover, thereby improved communication quality.
Description of drawings
Fig. 1 is the flow chart of the method for handover in the mobile communication of the embodiment of the present invention one;
Fig. 2 is the flow chart of the method for handover in the mobile communication of the embodiment of the present invention two.
Embodiment
Below in conjunction with the drawings and specific embodiments, the method for handover in the mobile communication of the present invention's proposition is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the present invention lucidly.
Core concept of the present invention is, method of handover in a kind of mobile communication is provided, provide travelling carriage to carry out the switching point of handover in described method of handover, compare by current location and switching point with travelling carriage, perhaps the travelling carriage that draws time and the preset value to switching point compared, thereby whether judgement carries out handover, its handover is based on switching point and produces, can avoid the generation of " ping-pong " thus, improve communication quality.In addition, above-mentioned is relatively a very shirtsleeve operation, as long as it carries out a simple difference computing, than DATA REASONING and the processing carried out between travelling carriage and base station, its arithmetic speed will be very many soon, thereby avoided the situation such as time-delay, hysteresis of handover, improved speed and the quality of handover, thereby improved communication quality.
Embodiment one
Consider the extensive expansion that Chinese high ferro is built, in the present embodiment, travelling carriage is positioned on high ferro, can be for example the Vehicle mounted station on high ferro, and the movement locus of the travelling carriage that provides is the working line of high ferro.Known at movement locus, and base station distribution on the way is also in situation easy to know, just can draw the switching point in this movement locus.In the present invention, not to the adquisitiones of switching point, and the quantity of switching point etc. makes restriction, and those skilled in the art can be according to the requirement to switching point, voluntarily more default switching points.For example, can utilize in this running orbit the intensity of base station signal, default a few places are the switching point that carries out handover, draw these switching point positional informations, for example comprise longitude and the latitude of this switching point, can comprise that also this switching point is apart from the distance information of the starting point of movement locus.
Please refer to Fig. 1, it is the flow chart of the method for handover in the mobile communication of the embodiment of the present invention one.As shown in Figure 1, at first execution in step one, obtains the current location information of described travelling carriage.Described current location information can comprise longitude and the latitude at the current place of described travelling carriage; Also can comprise the stroke that starting point to the current location of described travelling carriage autokinesis track is done, namely the current location of travelling carriage is to the distance of the starting point of movement locus.The current location information of above-mentioned travelling carriage navigation system or additive method via satellite obtains.
Then, execution in step two according to described current location information, judges whether described travelling carriage reaches switching point.Concrete, the longitude at described travelling carriage current location place and longitude and the latitude of latitude and described switching point can be compared, if longitude is identical with latitude, described travelling carriage arrival switching point, otherwise described travelling carriage does not reach switching point.
Described longitude and latitude can compare simultaneously, also can sequentially compare.When selection sequentially compared, if the parameter that first compares, namely longitude or latitude not simultaneously, namely stopped comparison, when only having the parameter that compares in the ban identical, then carried out the comparison of another parameter.In addition, when carrying out the order comparison, according to the difference of movement locus, can make different selection to the parameter of first carrying out comparison.For example, when movement locus is similar to when being the straight line in a north-south, carry out order relatively the time, first carry out the comparison of latitude, because in this case, the possibility that longitude is identical is higher, first carry out the comparison of latitude, can save the amount of comparison, further improve the speed of judgement.In like manner, when movement locus is similar to when being a transmeridional straight line, comparison that can advanced degree of passing through.
In addition, when judging whether described travelling carriage reaches switching point, distance between the distance that also can currently according to described travelling carriage do and the starting point of described switching point and described movement locus compares, if both are identical, described travelling carriage arrives switching point, otherwise described travelling carriage does not reach switching point.In other embodiments of the invention, also can whether reach switching point to described travelling carriage by additive method judges.
At last, execution in step three when described travelling carriage arrives switching point, is carried out handover; When described travelling carriage does not reach switching point, repeated execution of steps one and step 2.The i.e. result drawn according to execution in step two arrived switching point if drawn travelling carriage, carries out handover, otherwise execution in step one and step 2 again are until travelling carriage arrives switching point, till carrying out handover.Comprise mainly that at this handover that carries out activation Target cell channel and travelling carriage leave former channel, adjust to new channel, and do not need to carry out DATA REASONING and processing between travelling carriage and base station, therefore the situations such as time-delay, hysteresis of handover have been avoided, improve speed and the quality of handover, thereby improved communication quality.In addition, just occur when handover only has travelling carriage to reach switching point, also avoided the generation of " ping-pong ", improved communication quality.
In the present embodiment, before carrying out described step 1, carry out the preorder step: judge whether described travelling carriage enters described switch area, if carry out described step 1; If not, repeat described preorder step.Whether described travelling carriage enters the judgement of switch area, can receive the signal of launching the base station by travelling carriage and carry out, and also can realize by additive method.Signal when the base station that travelling carriage receives only has one, and this base station signal and former base station signal are not simultaneously, and the problem of a handover can occur equally, and still, this handover is very inevitable and clear and definite, therefore the application is not discussed this.
What the application will solve is " ping-pong " problem and the poor problem of communication quality that is easy in the switch area produce.The acquisition of the current location information of above-mentioned travelling carriage, and whether arrive judgement of switching point etc., no doubt can from movement locus begins, namely carry out.But, in order to save the spending of obtaining these information, in the present embodiment, before execution in step one, first carry out the judgement whether travelling carriage enters the switch area, if entered the switch area, begin execution in step one, two, three; Otherwise, do not carry out.
In the present embodiment, switching point is positioned at the switch area, in addition, only has a switching point in described switch area.So, in a switch area, just only can carry out the operation of a handover, thereby effectively avoid the generation of " ping-pong ".In other embodiments of the invention, according to situation in the switch area, for example base station signal changes in very fierce situation, in initial, two switching points also can be set, certainly for fear of the generation of " ping-pong ", in a switch area, switching point should not arrange too much.
In the present embodiment, can also proofread and correct described switching point, situation about namely carrying out according to reality if other positions in the switch area are more suitable for as switching point, is more suitable for positional information as the position of switching point with former switching point updating location information for this.Concrete, after travelling carriage entered the switch area, the current location information of real time record travelling carriage and the distance of described mobile to base station until travelling carriage goes out described switch area, according to described distance, were proofreaied and correct switching point.For example, the distance of record move platform to two base station, when travelling carriage to some positions, the distance less than itself and another base station that the distance of itself and a base station continues, and this position is not switching point, can be the positional information of this position with the updating location information of switching point, proofread and correct switching point.Certainly, can also select other concrete determination methods, be more suitable for as switching point to judge which position.
In other embodiments of the invention, also can be by after entering the switch area when travelling carriage, the signal strength signal intensity of the base station that the current location information of real time record travelling carriage and described travelling carriage receive is until travelling carriage shifts out described switch area, according to described signal strength signal intensity, proofread and correct switching point.For example, the intensity of the signal that the record move platform receives from two base stations, when travelling carriage to some positions, its signal strength signal intensity that receives from a base station continue greater than the signal strength signal intensity that receives from another base station, and this position is not switching point, can be the positional information of this position with the updating location information of switching point, proofread and correct switching point.Certainly, can also select other concrete determination methods, be more suitable for as switching point to judge which position.
By carrying out the switching point aligning step, can select better position as switching point according to actual conditions, thereby improve the communication quality of handover.
Embodiment two
Please refer to Fig. 2, it is the flow chart of the method for handover in the mobile communication of the embodiment of the present invention two.The difference of the present embodiment and embodiment one is, embodiment one according to the current location of travelling carriage and switching point relatively, thereby whether judgement carries out handover; And in the present embodiment, compare according to time and the preset value of travelling carriage to switching point, thereby whether judgement carries out handover.
As shown in Figure 2, in the present embodiment, in execution in step one, except identical with embodiment one, obtaining also needs to obtain the present speed information of travelling carriage outside the current location information of travelling carriage; Then, execution in step two according to described current location and velocity information, draws described travelling carriage to the time of switching point; Last execution in step three when the described time is less than or equal to a preset value, is carried out handover; When the described time during greater than described preset value, repeated execution of steps one and step 2.
In the present embodiment, the time and the preset value that arrive switching point according to travelling carriage compare, and judge whether to carry out handover.Concrete, this travelling carriage that draws compares to switching point required temporal information and a preset value, and this preset value for example can be set to 1 second or a period of times of other length, according to this comparative result, when the described time is less than or equal to a preset value, carry out handover; When the described time during greater than described preset value, repeated execution of steps one and step 2.
Foregoing description is only the description to preferred embodiment of the present invention, is not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention is done according to above-mentioned disclosure all belong to the protection range of claims.
Claims (22)
1. the method for handover in a mobile communication, is characterized in that, the switching point positional information of movement locus and the handover of travelling carriage is provided, and carry out:
Step 1: the current location information that obtains described travelling carriage;
Step 2: according to described current location information, judge whether described travelling carriage arrives described switching point;
Step 3: when described travelling carriage arrives described switching point, carry out handover; When described travelling carriage does not arrive described switching point, repeat described step 1 and described step 2.
2. the method for handover in mobile communication as claimed in claim 1, is characterized in that, described current location information comprises: longitude and the latitude at described travelling carriage place.
3. the method for handover in mobile communication as claimed in claim 1, is characterized in that, described current location information comprises: the stroke that described travelling carriage is done.
4. the method for handover in mobile communication as claimed in claim 1 or 2, is characterized in that, described switching point positional information comprises: longitude and the latitude at described switching point place.
5. the method for handover in mobile communication as described in claim 1 or 3, is characterized in that, described switching point positional information comprises: described switching point is to the distance of the starting point of described movement locus.
6. the method for handover in mobile communication as claimed in claim 1, is characterized in that, before carrying out described step 1, carries out the preorder step: judge whether described travelling carriage enters described switch area, if carry out described step 1; If not, repeat described preorder step.
7. the method for handover in mobile communication as claimed in claim 6, is characterized in that, described switching point is positioned at described switch area.
8. the method for handover in mobile communication as claimed in claim 6, is characterized in that, only has a switching point in described switch area.
9. the method for handover in mobile communication as claimed in claim 6, is characterized in that, by receiving the signal of base station emission, judges whether described travelling carriage enters described switch area.
10. the method for handover in mobile communication as claimed in claim 6, it is characterized in that, after described travelling carriage enters described switch area, the current location information of the described travelling carriage of real time record and the distance of described mobile to base station, until described travelling carriage shifts out described switch area, according to described distance, proofread and correct described switching point.
11. the method for handover in mobile communication as claimed in claim 6, it is characterized in that, after described travelling carriage enters described switch area, the signal strength signal intensity of the base station that the current location information of the described travelling carriage of real time record and described travelling carriage receive, until described travelling carriage shifts out described switch area, according to described signal strength signal intensity, proofread and correct described switching point.
12. the method for handover in a mobile communication is characterized in that, the switching point positional information of movement locus and the handover of travelling carriage is provided, and carries out:
Step 1: the current location and the velocity information that obtain travelling carriage;
Step 2: according to described current location and velocity information, draw described travelling carriage to the time of described switching point;
Step 3: when the described time is less than or equal to a preset value, carry out handover; When the described time during greater than described preset value, repeated execution of steps one and step 2.
13. the method for handover in mobile communication as claimed in claim 12 is characterized in that, described current location information comprises: longitude and the latitude at described travelling carriage place.
14. the method for handover in mobile communication as claimed in claim 12 is characterized in that, described current location information comprises: the stroke that described travelling carriage is done.
15. the method for handover in mobile communication as described in claim 12 or 13 is characterized in that, described switching point positional information comprises: longitude and the latitude at described switching point place.
16. the method for handover in mobile communication as described in claim 12 or 14 is characterized in that, described switching point positional information comprises: described switching point is to the distance of the starting point of described movement locus.
17. the method for handover in mobile communication as claimed in claim 12 is characterized in that, before carrying out described step 1, carries out the preorder step: judge whether described travelling carriage enters described switch area, if carry out described step 1; If not, repeat described preorder step.
18. the method for handover in mobile communication as claimed in claim 17 is characterized in that, described switching point is positioned at described switch area.
19. the method for handover in mobile communication as claimed in claim 17 is characterized in that, only has a switching point in described switch area.
20. the method for handover in mobile communication as claimed in claim 17 is characterized in that, by receiving the signal of base station emission, judges whether described travelling carriage enters described switch area.
21. the method for handover in mobile communication as claimed in claim 17, it is characterized in that, after described travelling carriage enters described switch area, the current location information of the described travelling carriage of real time record and the distance of described mobile to base station, until described travelling carriage shifts out described switch area, according to described distance, proofread and correct described switching point.
22. the method for handover in mobile communication as claimed in claim 17, it is characterized in that, after described travelling carriage enters described switch area, the signal strength signal intensity of the base station that the current location information of the described travelling carriage of real time record and described travelling carriage receive, until described travelling carriage shifts out described switch area, according to described signal strength signal intensity, proofread and correct switching point.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105430694A (en) * | 2015-11-02 | 2016-03-23 | 广东欧珀移动通信有限公司 | Mobile network switching method and device |
| CN106921939A (en) * | 2015-12-28 | 2017-07-04 | 普天信息技术有限公司 | A kind of data communication switchover method and system towards automatic Pilot |
| WO2017219625A1 (en) * | 2016-06-23 | 2017-12-28 | 哈尔滨海能达科技有限公司 | Data processing method and server |
| CN109842908A (en) * | 2017-11-24 | 2019-06-04 | 华为技术有限公司 | Base station switch method and equipment based on mobile device motion state |
| CN114828108A (en) * | 2021-01-28 | 2022-07-29 | 海能达通信股份有限公司 | Non-participating base station handover method, device and system |
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| CN1592433A (en) * | 2003-08-26 | 2005-03-09 | 华为技术有限公司 | Handover method based on positioning information |
| CN1852568A (en) * | 2005-08-29 | 2006-10-25 | 华为技术有限公司 | Small-zone switching-over method |
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| CN1592433A (en) * | 2003-08-26 | 2005-03-09 | 华为技术有限公司 | Handover method based on positioning information |
| CN1852568A (en) * | 2005-08-29 | 2006-10-25 | 华为技术有限公司 | Small-zone switching-over method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430694A (en) * | 2015-11-02 | 2016-03-23 | 广东欧珀移动通信有限公司 | Mobile network switching method and device |
| CN106921939A (en) * | 2015-12-28 | 2017-07-04 | 普天信息技术有限公司 | A kind of data communication switchover method and system towards automatic Pilot |
| CN106921939B (en) * | 2015-12-28 | 2020-01-31 | 普天信息技术有限公司 | data communication switching method and system for automatic driving |
| WO2017219625A1 (en) * | 2016-06-23 | 2017-12-28 | 哈尔滨海能达科技有限公司 | Data processing method and server |
| CN109842908A (en) * | 2017-11-24 | 2019-06-04 | 华为技术有限公司 | Base station switch method and equipment based on mobile device motion state |
| US11350335B2 (en) | 2017-11-24 | 2022-05-31 | Huawei Technologies Co., Ltd. | Base station switching method and device based on motion status of mobile device |
| CN114828108A (en) * | 2021-01-28 | 2022-07-29 | 海能达通信股份有限公司 | Non-participating base station handover method, device and system |
| CN114828108B (en) * | 2021-01-28 | 2023-12-12 | 海能达通信股份有限公司 | Non-participating base station handover method, device and system |
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Application publication date: 20130508 |